Transaction Fees

A transaction fee is a fee that is required in order to process a transaction on the Aleo network. Currently, there are two types of transaction fees that correspond to each transaction type: deploy and execute.

Aleo Credits Denomination Table

Denomination	Size of Transaction	Value	Example
microcredit	Byte	1	Smallest denomination
millicredit	Kilobyte (KB)	1000 microcredits	Most transactions average between 3 and 10 millicredits
credit	Megabyte (MB)	1000 millicredits	Largest denomination

Note that transaction sizes are averages using Big O notation (on the order of).

Types of Transaction Fees

Deploy Transaction Fee

A fee incurred when deploying an application on the Aleo blockchain

Structure

Part of Deploy Transaction	Size	Multiplier	Cost
Transaction wrapper	0 KB	1	0 millicredits
Transition wrapper	0 KB	1	0 millicredits
Verifying key	1 KB	2	2 millicredits
Certificate	1 MB	2	2 millicredits
Program bytecode	1 KB	1	1 millicredit

Total	Size	Multiplier	Total cost
Transaction -> Transition	5 KB	1000 *	5 credits

Notes

• To prevent bad actors from spamming the network with superfluous transactions, a variable Deploy Transaction Multiplier will be added to all deploy transactions.

Execute Transaction Fee

A fee incurred when executing an application on the Aleo blockchain

Structure (minimum cost example)

Part of Execute Transaction	Size	Multiplier	Cost
Transaction wrapper	0 KB	1	0 millicredits
Transition wrapper	0 KB	1	0 millicredits
Input	1 KB	2	2 millicredits
Output	1 KB	2	2 millicredits
Proof	1 KB	1	1 millicredit

Total	Size	Multiplier	Total cost
Transaction -> Transition	5 KB	1	5 millicredits

Structure (maximum cost example)

Part of Execute Transaction	Size	Multiplier	Cost
Transaction wrapper	1 KB	65	65 millicredits
Transition wrapper	1 MB	32	32 credits
Input	1 KB	16 * 32	512 millicredits
Output	1 KB	16 * 32	512 millicredits
Proof	1 KB	1	1 millicredit

Total	Size	Multiplier	Total cost
Transaction -> Transition	32 MB	1	32 credits

Notes

• The minimum execute transaction fee may increase to prevent spamming; it is currently stable between 3 and 5 millicredits for a basic credits.aleo transfer